Squeeze lemon into a medium bowl and add in the garlic, rosemary, 1 teaspoon of paprika, and salt/pepper. Add salmon to the bowl and toss until salmon is coated in the lemon mixture. Set aside.
In a large skillet, add 1 tablespoon of olive oil on med-high heat and place salmon in the pan. Cook for about 3 minutes on each side or until desired doneness is reached. Remove salmon from the pan and set aside.
Reduce heat to medium and add 2 tablespoons of olive oil to the same skillet. Add in bell peppers, onion, kale, 2 teaspoons of lemon pepper seasoning, and 1 teaspoon of paprika. Stir frequently and cook for about 10 minutes or until vegetables are tender. Season with salt/pepper to taste.